Thanthita Srisophon. (2011) Perception and Participation of employees of national flag carrier airline and low cost airlines, Bangkok, Thailand toward green program in their airline /. Naresuan University,:ม.ป.ท.Thanthita Srisophon. 2011. Perception and Participation of employees of national flag carrier airline and low cost airlines, Bangkok, Thailand toward green program in their airline /. ม.ป.ท.:Naresuan University,;Thanthita Srisophon. Perception and Participation of employees of national flag carrier airline and low cost airlines, Bangkok, Thailand toward green program in their airline /. ม.ป.ท.:Naresuan University, 2011. Print.